Skip time.tzset() tests on WASM platforms

Author: agriyakhetarpal

pandas/tests/indexes/datetimes/methods/test_normalize.py

@@ -70,6 +70,7 @@ def test_normalize_tz(self):
         assert not rng.is_normalized
 
     @td.skip_if_windows
+    @td.skip_if_wasm  # tzset is available only on Unix-like systems
     @pytest.mark.parametrize(
         "timezone",
         [

pandas/tests/tools/test_to_datetime.py

@@ -975,7 +975,8 @@ def test_to_datetime_now(self):
             assert pdnow.tzinfo is None
             assert pdnow2.tzinfo is None
 
-    @td.skip_if_windows  # `tm.set_timezone` does not work in windows
+    @td.skip_if_windows  # `tm.set_timezone` does not work on Windows
+    @td.skip_if_wasm  # tzset is available only on Unix-like systems
     @pytest.mark.parametrize("tz", ["Pacific/Auckland", "US/Samoa"])
     def test_to_datetime_today(self, tz):
         # See GH#18666
@@ -1007,6 +1008,7 @@ def test_to_datetime_today_now_unicode_bytes(self, arg):
         to_datetime([arg])
 
     @pytest.mark.filterwarnings("ignore:Timestamp.utcnow is deprecated:FutureWarning")
+    @td.skip_if_wasm  # tzset is available only on Unix-like systems
     @pytest.mark.parametrize(
         "format, expected_ds",
         [

pandas/tests/tslibs/test_parsing.py

@@ -24,7 +24,7 @@
 import pandas._testing as tm
 from pandas._testing._hypothesis import DATETIME_NO_TZ
 
-
+@td.skip_if_wasm  # tzset is available only on Unix-like systems
 @pytest.mark.skipif(
     is_platform_windows() or ISMUSL,
     reason="TZ setting incorrect on Windows and MUSL Linux",